【０００１】[0001]
【技術分野】本発明は紡糸口金およびこれから押出され
る紡糸ヤーン束、紡糸−竪型導溝、形成された紡糸不織
布用の連続稼働スクリーンベルト、このベルト下方に設
けられた空気吸引装置を具備し、上記紡糸−竪型導溝
が、上方から下方に向けて、所定の長さおよび幅を有す
る送風区間、この送風区間に連接して傾斜角度の勾配を
持つ中間導溝部分、この中間導溝部分に連接する延伸処
理導溝部分、これに連接する拡散導溝部分を有する、処
理空気流の膨張、加速および紡糸ヤーンの延伸をもたら
す休止圧原理により操作される紡糸不織布製造用装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a spinneret and a spun yarn bundle extruded therefrom, a spinning-vertical guide groove, a continuously operating screen belt for the formed spun nonwoven fabric, and an air suction device provided below the belt. An air supply section having a predetermined length and width from above to below, an intermediate guide groove portion connected to the air supply section and having a gradient of an inclination angle; The invention relates to an apparatus for the production of spun non-woven fabrics which operates according to the rest pressure principle which results in the expansion, acceleration and drawing of spun yarns of the process air, having a drawing treatment channel part adjoining the part and a diffusion guiding part adjoining it.
【０００２】ここで休止圧原理（Ｒｕｈｅｄｒｕｃｋｐ
ｒｉｎｚｉｐ）と称するのは、延伸処理区間まで、場合
によりこれを超えるまで膨張し、加速される導入空気流
の一定の静圧が、紡糸−竪型導溝の送風区間において維
持される、特定の処理空気流システムを意味する。この
ために、搬出スクリーンベルト下方に設けられた空気吸
引装置が役立つ。Here, the principle of rest pressure (Ruhedruckp)
The term “rinzip” refers to a specific static pressure of the introduced air flow which is expanded and accelerated up to and possibly above the drawing section, in the blowing section of the spinning-vertical channel, Means the process airflow system. For this purpose, an air suction device provided below the carry-out screen belt is useful.
【０００３】これに対して推進ジェット原理と称される
システムがあるが、この場合には、フィラメントヤーン
を搬出方向において捕捉するために、適当な推進空気ノ
ズルにより推進ジェット空気流が生起せしめられる。処
理用の冷空気流は、紡糸−竪型導溝の送風区間におい
て、紡糸ヤーン束に対し、直交する方向で導入される。
紡糸口金は、一般的に幾何学的に規則正しく配列され
た、紡糸ヤーンを押出す複数の細口が穿設されているノ
ズル板体である。前述した、また後に詳述するこの紡糸
細口の幾何学的配列は、紡糸ヤーンに対して直交する構
成の縦断面構造と関連する。若干の構成要素を有する紡
糸−竪型導溝は、紡糸ヤーン束に直交する断面において
対応する奥行きを有する。In contrast, there is a system called the propulsion jet principle, in which a propelling jet air stream is created by means of suitable propelling air nozzles in order to trap the filament yarn in the exit direction. The processing cold air flow is introduced in a direction perpendicular to the spinning yarn bundle in the blowing section of the spinning-vertical guide channel.
BACKGROUND ART A spinneret is a nozzle plate body having a plurality of narrow holes for extruding a spinning yarn, which are generally arranged in a geometrically regular manner. This spinneret geometry described above and in more detail below is associated with a longitudinal cross-section configuration that is orthogonal to the spinning yarn. A spin-vertical channel with some components has a corresponding depth in a cross section perpendicular to the spinning yarn bundle.
【０００４】[0004]
【従来技術】冒頭に述べた目的および構成の装置は、種
々に相違する実施態様において公知であり、それなりに
有利であることが実証されている。しかしながら、これ
らはエネルギーの観点から、ことに遷移係数からして改
善の余地がある不満足なものである。ここで云う遷移係
数は、処理空気流速度と紡糸ヤーン速度、すなわち定常
的延伸処理速度を紡糸ヤーン束の全部の紡糸ヤーン数で
除算した商を意味する。これは公知装置では２．４から
４の範囲であって、紡糸ヤーン最大限速度、すなわちこ
れの延伸速度より大きい。2. Description of the Related Art Devices of the above-mentioned purpose and construction are known in a variety of different embodiments and have proven to be advantageous. However, these are unsatisfactory from the energy point of view, especially from the viewpoint of the transition coefficient. The transition coefficient referred to here means the quotient of the processing air flow rate and the spinning yarn speed, that is, the steady drawing processing speed divided by the total number of spinning yarns in the spinning yarn bundle. This ranges from 2.4 to 4 in known devices and is greater than the maximum speed of the spun yarn, ie its drawing speed.
【０００５】[0005]
【発明が解決しようとする課題】そこでこの技術分野に
おける課題ないし本発明の目的は、従来装置にくらべて
さらに効率的であり、遷移係数において改善された紡糸
不織布製造装置を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for producing a spun nonwoven fabric which is more efficient than conventional apparatuses and has an improved transition coefficient.
【０００６】[0006]
【課題を解決するための手段】しかるにこの課題ないし
目的は、紡糸口金およびこれから押出される紡糸ヤーン
束、紡糸−竪型導溝、形成された紡糸不織布用の連続稼
働スクリーンベルト、このベルト下方に設けられた空気
吸引装置を具備し、上記紡糸−竪型導溝が、上方から下
方に向けて、所定の長さおよび幅を有する送風区間、こ
の送風区間に連接して傾斜角度の勾配を持つ中間導溝部
分、この中間導溝部分に連接する延伸処理導溝部分、こ
れに連接する拡散導溝部分を有する、処理空気流の膨
張、加速および紡糸ヤーンの延伸をもたらす休止圧原理
により操作される紡糸不織布製造用装置であって、処理
空気流が、上記送風区間に導入され、かつこの区間から
延伸処理導溝部分上端に至るまで加速され、紡糸ヤーン
速度が紡糸口金から押出されて、直ちにその定常的な延
伸処理速度値に達し、グラフにおいて、紡糸−竪型導溝
の垂直軸線に沿って形成される処理空気流速度のカーブ
と、同様にして形成される紡糸ヤーンの延伸による速度
とが、中間導溝部分の範囲における交点で交差し、これ
により以下の特徴、すなわち（ａ）紡糸口金から交点ま
での間隔が、延伸処理導溝部分の下端から交点までの間
隔より短いこと、（ｂ）中間導溝部分の勾配傾斜角度
が、０．０５°から２°の範囲であること、（ｃ）送風
区間の紡糸ヤーン束の幅が、送風区間の幅よりファクタ
０．７だけ小さいことがもたらされ、処理空気流系が、
処理空気流速度最大限値が、紡糸ヤーン延伸定常速度値
よりファクタ１．２から１．６だけ大きいようになされ
ていることを特徴とする紡糸不織布製造用装置により解
決されることが本発明者らにより見出された。SUMMARY OF THE INVENTION The object or object of the present invention is to provide a spinneret and a spun yarn bundle to be extruded therefrom, a spinning-vertical groove, a continuously operating screen belt for the formed spun non-woven fabric, and a lower belt. An air suction device is provided, wherein the spinning-vertical guide groove has a predetermined length and width in a blowing section from top to bottom, and has a gradient of an inclination angle connected to the blowing section. Operated according to the rest pressure principle which results in the expansion, acceleration and drawing of the spun yarn, with an intermediate channel section, a stretch processing channel section connected to the intermediate channel section, and a diffusion channel section connected thereto. An apparatus for producing a spun nonwoven fabric, wherein a processing air stream is introduced into the blowing section and accelerated from the section to the upper end of the drawing guide groove portion, and the spinning yarn speed is increased from the spinneret. As soon as it is discharged, it reaches its steady draw processing speed value, and in the graph the process air flow rate curve formed along the vertical axis of the spinning-vertical channel and the spinning yarn formed in a similar manner. At the intersection in the range of the intermediate guide groove portion, whereby the following characteristics are obtained: (a) the distance from the spinneret to the intersection is the distance from the lower end of the drawing guide groove portion to the intersection. (B) the gradient inclination angle of the intermediate guiding groove portion is in the range of 0.05 ° to 2 °, and (c) the width of the spun yarn bundle in the blowing section is a factor 0 smaller than the width of the blowing section. .7, so that the process airflow system is
The inventor of the present invention solves the problem by the apparatus for producing a spun nonwoven fabric, wherein the maximum value of the treated air flow velocity is set to be larger than the steady-state velocity value of the spinning yarn by a factor of 1.2 to 1.6. Found by et al.
【０００７】ここで処理空気流速度と称するのは、紡糸
−竪型導溝の横断面による平均値を意味する。本発明の
好ましい実施態様では、紡糸ヤーン束における個々の紡
糸ヤーンの間隔は１．５から２ｍｍである。また紡糸ヤ
ーン束自体が、紡糸−竪型導溝の画壁から充分な間隔を
保たねばならない。紡糸口金と交点の間の間隔は、延伸
処理導溝部分下端と交点の間の間隔より、ファクタ約
０．５だけ小さくすることによって、特に好ましい結果
がもたらされる。ことに送風区間の範囲内に在る紡糸ヤ
ーン束の幅は、送風区間の幅よりファクタ約０．３だけ
小さく構成されるのが有利である。さらに本発明の有利
な実施態様による装置において、紡糸−竪型導溝におけ
る処理空気流の圧力損失は、６００から２５００Ｐａの
程度である。Here, the term "processing air flow velocity" means an average value of the cross section of the spinning-vertical guide groove. In a preferred embodiment of the invention, the spacing of the individual spun yarns in the spun yarn bundle is 1.5 to 2 mm. Also, the spinning yarn bundle itself must maintain a sufficient distance from the drawing-wall of the spinning-vertical guide groove. Particularly favorable results are obtained by reducing the spacing between the spinneret and the intersection by a factor of about 0.5 from the spacing between the lower end of the drawn channel and the intersection. In particular, the width of the spinning yarn bundle lying within the blast zone is advantageously smaller than the width of the blast zone by a factor of about 0.3. Furthermore, in the device according to an advantageous embodiment of the invention, the pressure loss of the treated air stream in the spinning-vertical channel is of the order of 600 to 2500 Pa.
【０００８】本発明は、紡糸口金から押出される紡糸ヤ
ーンは、制動されつつも延伸処理により延伸処理導管部
分出口に達するその全長にわたり、処理空気流によりも
たらされる空気力の作用を受けるという公知事実に基礎
を置く。本発明は装置設計などにこの空気流の力を利用
し、これに臨界的パラメータ、すなわちすでに選択され
た交点、すなわち紡糸−竪型導溝の縦方向軸線に沿っ
て、形成される処理空気流速度のカーブと、これに対応
する紡糸ヤーン速度、すなわち延伸処理速度のカーブを
描いたグラフにおける両カーブの交点を結付ける。すな
わち、本発明はこの分野の従来技術に属さない認識、す
なわち、請求項１に記載された特徴（ａ）、（ｂ）、
（ｃ）の結合により制動空気力が著しく減少され得ると
の認識に基づくものである。これにより、遷移係数の改
善、従ってまた効率の改善がもたらされ得る。本発明の
これら特徴における数値的パラメータの配慮により、処
理空気流速度の最大値が、紡糸ヤーン速度、すなわち定
常的延伸処理速度よりファクタ１．２から１．６大きい
処理空気流システムをもたらし得る。これら数値は実験
により確認することは困難なことではない。同様のこと
は、圧力損失の数値に関しても該当する。The present invention is based on the known fact that the spun yarn extruded from the spinneret is subjected to the aerodynamic force caused by the process air flow over its entire length reaching the outlet of the drawing process section by the drawing process while being braked. Based on. The present invention utilizes the force of this air flow for device design and the like, for which a critical parameter, i.e. the already selected intersection, i.e., the treated air flow formed along the longitudinal axis of the spinning-vertical guide groove. The curve of speed and the corresponding spinning yarn speed, that is, the intersection of both curves in the graph depicting the curve of the drawing speed are connected. That is, the present invention is a recognition that does not belong to the prior art in this field, that is, the features (a) and (b) described in claim 1.
It is based on the recognition that the braking aerodynamic force can be significantly reduced by the combination of (c). This can lead to improved transition coefficients and thus also to improved efficiency. Due to the numerical parameter considerations in these aspects of the invention, a maximum treated air flow rate may result in a treated air flow system having a factor 1.2 to 1.6 greater than the spinning yarn speed, i.e., the steady draw processing speed. These values are not difficult to confirm by experiment. The same applies to the pressure loss figures.
【０００９】[0009]
【実施例】以下において実施態様を例示する添付図面を
参照して本発明をさらに具体的に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described more specifically below with reference to the accompanying drawings illustrating embodiments.
【００１０】図１には、本発明により紡糸不織布を製造
するための、休止圧原理により処理空気流を膨張させ、
加速させ、紡糸ヤーンを延伸する装置１の本質的構成各
部分、ことに紡糸−竪型導溝４が示されている。基本的
構成部分として、紡糸ヤーン束３を押出す紡糸口金２、
紡糸−竪型導溝４、紡糸不織布を搬出するための連続走
行スクリーベルト５、このベルト下方に設置されている
空気吸入装置６が設けられる。FIG. 1 shows that the process air stream is expanded by the rest pressure principle to produce a spun nonwoven fabric according to the invention,
The essential constituent parts of the device 1 for accelerating and drawing the spinning yarn, in particular the spinning-vertical guide channels 4, are shown. A spinneret 2 for extruding a spun yarn bundle 3 as a basic component,
A spinning-vertical guide groove 4, a continuous running screed belt 5 for carrying out spun nonwoven fabric, and an air suction device 6 installed below the belt are provided.
【００１１】紡糸−竪型導溝４には、所定の長さと幅を
有する送風区間７が設けられ、ここで紡糸ヤーン束３に
図示された矢印で示されるように処理空気流が吹付けら
れる。紡糸−竪型導溝４は、さらに送風区間７の下方に
接続され、傾斜角度８の勾配を持つ中間導溝部分９を有
する。この中間導溝部分９に続いて、さらに延伸処理導
溝部分１０、次いでディフューザないし拡散導溝部分１
１が設けられる。処理空気流は上述したように送風区間
７内に導入され、場合により助走区間により、加速さ
れ、その最高速度で、延伸処理導溝部分１０の上端に至
る。紡糸ヤーンの速度は、紡糸ヤーン束３が紡糸口金２
から押出された直後にその定常的な延伸速度に達する。The spinning-vertical guide groove 4 is provided with an air blowing section 7 having a predetermined length and width, in which the spinning yarn bundle 3 is blown with a treated air stream as indicated by the arrow. . The spinning-vertical guide groove 4 further has an intermediate guide groove portion 9 connected below the air blowing section 7 and having a slope of an inclination angle 8. Subsequent to this intermediate channel portion 9, further a stretched channel portion 10 and then a diffuser or diffusion channel portion 1.
1 is provided. The processing air flow is introduced into the air blowing section 7 as described above, and is accelerated by a running section as needed, and reaches the upper end of the drawing processing groove portion 10 at the highest speed. The spinning yarn speed is as follows:
And reaches its steady stretching speed immediately after extrusion.
【００１２】図２において、紡糸−竪型導溝４の縦軸線
に沿って縦座標軸１２が示されており、さらに処理空気
流速度のカーブ１３と、延伸を付加した紡糸ヤーン速度
のカーブ１４が示されている。横座標軸１５は両カーブ
１３、１４に対して等しい尺度を持つ。このグラフか
ら、中間導溝部分９に対応するレベルにおいて、カーブ
１３とカーブ１４が交点Ｓにおいて交差していることが
認められる。In FIG. 2, the ordinate axis 12 is shown along the longitudinal axis of the spinning-vertical guide groove 4, and further the treated air flow velocity curve 13 and the drawn spinning yarn velocity curve 14 are shown. It is shown. The abscissa axis 15 has an equal scale for both curves 13,14. From this graph, it is recognized that the curve 13 and the curve 14 intersect at the intersection S at the level corresponding to the intermediate guide groove portion 9.
【００１３】また図１と図２を対比して、この交点Ｓと
口金２の間隔Ａ1 は、交点Ｓと延伸導溝部分１０下端の
間隔Ａ2 より短いことが認められる。本発明のこの好ま
しい実施態様において、交点Ｓと口金２の間隔Ａ1 は、
交点Ｓと延伸導溝部分１０下端の間隔Ａ2 より、ファク
タ約０．５だけ小さくなされている。1 and 2, it can be seen that the distance A1 between the intersection S and the base 2 is shorter than the distance A2 between the intersection S and the lower end of the extended guide groove portion 10. In this preferred embodiment of the invention, the distance A1 between the intersection S and the base 2 is
The distance A2 between the intersection S and the lower end of the extending guide groove portion 10 is smaller by a factor of about 0.5.
【００１４】また図１において、中間導溝部分９の傾斜
角度８は、０．５°から２°の範囲に構成される。また
同じく図１において、紡糸ヤーン束３の送風区間７内に
おける幅Ｂ1 は、区間７幅（半径）Ｂ2 より、ファクタ
０．７以下、好ましくは０．３だけ小さくなされる。In FIG. 1, the inclination angle 8 of the intermediate groove portion 9 is set in the range of 0.5 ° to 2 °. Also similarly in FIG. 1, the width B1 of the blowing section in 7 of the spinning yarn bundles 3, from the section 7 width (radius) B2, factor 0.7 or less, preferably made as small as 0.3.
【００１５】さらに処理空気流系は、処理空気流速度最
大限値ＶＬmax が、一定の延伸処理度を付加した紡糸ヤ
ーン速度ＶＦa よりファクタ１．２から１．６だけ大き
くなるように構成される。Further, the processing air flow system is configured such that the processing air flow velocity maximum value VLmax is larger by a factor of 1.2 to 1.6 than the spinning yarn speed VFa to which a certain degree of drawing treatment is added. You.
【図１】本発明装置の紡糸−竪型導溝と紡糸ヤーン束の
縦断面図である。FIG. 1 is a longitudinal sectional view of a spinning-vertical guide groove and a spinning yarn bundle of a device of the present invention.
【図２】本発明を説明するためのグラフである。FIG. 2 is a graph for explaining the present invention.
１‥‥‥紡糸不織布製造用装置 ２‥‥‥紡糸口金 ３‥‥‥紡糸ヤーン束 ４‥‥‥紡糸−竪型導溝 ５‥‥‥搬出スクリーンベルト ６‥‥‥空気吸引装置 ７‥‥‥送風区間 ８‥‥‥傾斜角度 ９‥‥‥中間導溝部分 １０‥‥‥延伸処理導溝部分 １１‥‥‥ディフューザ（拡散導溝部分） １２‥‥‥縦座標軸 １３‥‥‥（処理空気流速度の）カーブ １４‥‥‥（延伸処理度を付加した紡糸ヤーン速度の）
カーブ １５‥‥‥横座標軸 Ｓ‥‥‥‥両カーブ１３、１４の交点 ＶＬmax ‥処理空気流速度最大限値 ＶＦa ‥‥紡糸ヤーン速度 Ａ1 ‥‥‥Ｓと紡糸口金の間隔 Ａ2 ‥‥‥Ｓと延伸導溝部分１０下端の間隔 Ｂ1 ‥‥‥紡糸ヤーン束の幅 Ｂ2 ‥‥‥送風区間の幅（半径）1 ‥‥‥ Spinning nonwoven fabric manufacturing equipment 2 ‥‥‥ Spinneret 3 ‥‥‥ Spinning yarn bundle 4 ‥‥‥ Spinning-vertical guide groove 5 ‥‥‥ Unloading screen belt 6 ‥‥‥ Air suction device 7 ‥‥‥ Blower section 8 ‥‥‥ Inclination angle 9 ‥‥‥ Intermediate guide groove 10 ‥‥‥ Extension processing guide groove 11 ‥‥‥ Diffuser (diffusion guide groove) 12 ‥‥‥ ordinate axis 13 ‥‥‥ (Process air flow Curve of speed (14 °) (of spinning yarn speed with additional degree of drawing)
Curve 15 ‥‥‥ abscissa axis S 交 intersection of both curves 13, 14 VLmax ‥ maximum value of processing air flow velocity VFa ‥‥ spinning yarn speed A1間隔 spacing between S and spinneret A2 ‥間隔 Spacing between S and lower end of drawing guide groove portion 10 B1幅 Width of spun yarn bundle B2幅 Width (radius) of blowing section
フロントページの続き (71)出願人 591069293 ライフェンホイゼル、ゲゼルシャフト、ミ ット、ベシュレンクテル、ハフツング、ウ ント、コンパニー、マシーネンファブリー ク ＲＥＩＦＥＮＨＡＥＵＳＥＲ ＧＥＳＥＬ ＬＳＣＨＡＦＴ ＭＩＴ ＢＥＳＣＨＲＡ ＮＫＴＥＲ ＨＡＦＴＵＮＧ ＆ ＣＯＭ ＰＡＧＮＩＥ ＭＡＳＣＨＩＮＥＮＦＡＢ ＲＩＫ ドイツ連邦共和国、5210、トロイスドル フ、15、シュピッヘル、シュトラーセ（番 地ナシ) (72)発明者 ハンス、ゲオルク、ゲウス ドイツ、53539、ニーデルカセル、バーン ホーフシュトラーセ、54アー (72)発明者 デトレフ、フライ ドイツ、53844、トロイスドルフ、アム、 シュラークバウム、４ (72)発明者 ベルント、クンツェ ドイツ、53733、ヘネフ、アウフ、デム、 ブロックスベルク、86Front Page Continuation (71) Applicant 591069293 REIFENHAEUSER GESEL LSCHAFT MIT BESCHRA NKTER HAFTUNG MANCHA ENG ENG BENCH ENG ENG , Troisdorf, 15, Spichel, Strasse (No.) (72) Inventor Hans, Georg, Geus Germany, 53539, Niederkasel, Bahnhofstraße, 54 Ar (72) Inventor Detlef, Frei Germany, 53844, Troisdorf, Am, Schracbaum, 4 (72) Inventor Bernd, Kunze Germany, 53733, Hennef, Auf, Dem, Broxberg, 86
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| JP (1) | JP2585985B2 (en) |
| CN (1) | CN1041334C (en) |
| CA (1) | CA2147690C (en) |
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